Related Clues:

• Bit of crime scene evidence
• Blueprint with four bases
• Building block, of sorts
• FBI identifier
• Code letters
• Heredity helixes
• Personal matter?
• 'CSI' evidence, often
• Forensic sampling
• Modern means of ID
• Genetic stuff (Abbr.)
• Strands in a lab
• Trial evidence, perhaps
• Modern ID verifier
• Heredity molecule